JPH05296B2 - - Google Patents
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- Publication number
- JPH05296B2 JPH05296B2 JP26623487A JP26623487A JPH05296B2 JP H05296 B2 JPH05296 B2 JP H05296B2 JP 26623487 A JP26623487 A JP 26623487A JP 26623487 A JP26623487 A JP 26623487A JP H05296 B2 JPH05296 B2 JP H05296B2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- suction
- paper
- paper sheet
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000007246 mechanism Effects 0.000 claims description 19
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000007723 transport mechanism Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
Landscapes
- Delivering By Means Of Belts And Rollers (AREA)
Description
【発明の詳細な説明】
〔概要〕
負圧源により裏側から吸引される穴空きベルト
を用いた紙葉吸着搬送機構に関し、
比較的流量の小さな負圧源で初期搬送力を増大
させ且つ長い吸着搬送路を形成できるようにする
ことを目的とし、
負圧源により裏側から吸引される穴空きベルト
で紙葉を搬送する紙葉吸着搬送機構において、前
記負圧源により吸引される空気の流通経路を、前
記ベルトの裏側に紙葉搬送方向に沿つて配設して
構成する。[Detailed Description of the Invention] [Summary] Regarding a paper leaf suction conveyance mechanism using a perforated belt that is sucked from the back side by a negative pressure source, the initial conveyance force is increased by a negative pressure source with a relatively small flow rate, and the paper sheet is attracted for a long time. In a paper sheet suction and conveyance mechanism that conveys paper sheets using a perforated belt that is sucked from the back side by a negative pressure source, the paper sheet suction and conveyance mechanism is designed to form a conveyance path. are disposed on the back side of the belt along the sheet conveyance direction.
本発明は負圧源により裏側から吸引される穴空
きベルトを用いた紙葉吸着搬送機構に関する。
The present invention relates to a paper sheet suction and conveyance mechanism using a perforated belt that is sucked from the back side by a negative pressure source.
例えば複写機、電子プリンタ等においては、転
写部から定着部へ未定着紙葉を搬送するのに紙葉
吸着搬送機構がしばしば使用されている。この搬
送機構は、紙葉搬送用穴空きベルトを裏側から負
圧源により吸引して該ベルト上の紙葉の表裏に圧
力差を発生させ、これにより紙葉を吸着して搬送
するようになつている。 For example, in copying machines, electronic printers, and the like, a sheet suction and conveyance mechanism is often used to convey unfixed sheets from a transfer section to a fixing section. This conveyance mechanism uses a negative pressure source to suck the perforated belt for conveying paper sheets from the back side to generate a pressure difference between the front and back sides of the paper sheets on the belt, thereby attracting and conveying the paper sheets. ing.
本発明はこの種の搬送機構に適用されるもので
ある。 The present invention is applied to this type of transport mechanism.
この種の従来の紙葉吸着搬送機構を第９図（第
９図ａは正面図、第９図ｂは平面図）及び第１０
図（第１０図ａは正面図、第１０図ｂは下面図）
に示す。
This kind of conventional paper sheet suction conveyance mechanism is shown in Figs. 9 (Fig. 9a is a front view and Fig. 9b is a plan view) and 10.
Figures (Figure 10a is a front view, Figure 10b is a bottom view)
Shown below.
第９図の場合は、テンシヨンプーリ１により張
力を付与されてプーリ２，３に掛け渡された複数
本の穴空きベルト４の上面に送られる紙葉１００
を搬送するもので、５はベルト４のガイドを兼ね
た吸引用のボツクス、６はボツクス５と負圧源を
接続するダクトである。 In the case of FIG. 9, a sheet of paper 100 is fed to the upper surface of a plurality of perforated belts 4, which are tensioned by a tension pulley 1 and stretched around pulleys 2 and 3.
5 is a suction box that also serves as a guide for the belt 4, and 6 is a duct that connects the box 5 with a negative pressure source.
ベルト４は、多数の穴４ａを全長にわたり等間
隔に備えている。 The belt 4 is provided with a large number of holes 4a at equal intervals over its entire length.
ボツクス５は、各ベルト４をガイドする曲面状
の上板７を備えており、該上板７の各ベルト４を
ガイドする部分には、ベルト４の幅よりせまい幅
の長穴７ａがほぼ全長にわたり形成されている。
ベルト４の穴４ａは、該ベルト４を駆動側のプー
リ２により矢印方向に走行させたときに、この長
穴７ａ上を通過する。 The box 5 is equipped with a curved upper plate 7 that guides each belt 4, and in the portion of the upper plate 7 that guides each belt 4, an elongated hole 7a with a width narrower than the width of the belt 4 is formed along almost the entire length. It has been formed for a long time.
The hole 4a of the belt 4 passes over the elongated hole 7a when the belt 4 is run in the direction of the arrow by the drive-side pulley 2.
いま、ベルト４を走行させるとともに負圧源を
作動させておいて送りローラ８により紙葉１００
を上板７上に送ると、負圧源による長穴７ａ、穴
４ａを介した吸引作用により穴４ａわふさぐ紙葉
１００の表裏に圧力差（表側が大気圧で裏側が負
圧）が生じて該紙葉１００はベルト４に吸着、搬
送される。上板７上を通過した紙葉１００は送り
ローラ９により排出される。 Now, with the belt 4 running and the negative pressure source activated, the sheet 100 is fed by the feed roller 8.
When the paper sheet 100 is sent onto the upper plate 7, a pressure difference (atmospheric pressure on the front side and negative pressure on the back side) is generated between the front and back sides of the paper sheet 100 that blocks the hole 4a due to the suction action of the negative pressure source through the elongated hole 7a and the hole 4a. The paper sheet 100 is then attracted to the belt 4 and conveyed. The paper sheet 100 that has passed over the upper plate 7 is discharged by the feed roller 9.
また、第１０図の場合は、テンシヨンローラ１
１により張力を付与されてプーリ１２，１３に掛
け渡された複数本の穴空きベルト１４の下面に送
られる紙葉１００を搬送するもので、１５はベル
ト１４のガイドを兼ねた吸引用のボツクス、１６
はボツクス１５と負圧源とを接続するダクトであ
る。 In addition, in the case of Fig. 10, the tension roller 1
1 conveys paper sheets 100 to be sent to the lower surface of a plurality of perforated belts 14 that are stretched around pulleys 12 and 13 under tension, and 15 is a suction box that also serves as a guide for the belts 14. , 16
is a duct connecting the box 15 and a negative pressure source.
ベルト１４ａは、多数の穴１４ａを全長にわた
り等間隔に備えている。 The belt 14a has a large number of holes 14a equidistantly spaced along its entire length.
ボツクス１５は、各ベルト４をガイドする平面
状の下板１７を備えており、該下板１７の各ベル
ト１４をガイドする部分には、ベルト１４の幅よ
りせまい幅の長穴１７ａがほぼ全長にわたり形成
されている。ベルト１４の穴１４ａは、該ベルト
１４を駆動側のプーリ１２により矢印方向に走行
させたときに、この長穴１７ａ上を通過する。 The box 15 is equipped with a planar lower plate 17 that guides each belt 4, and in the portion of the lower plate 17 that guides each belt 14, a long hole 17a with a width narrower than the width of the belt 14 is formed along almost the entire length. It has been formed for a long time. The hole 14a of the belt 14 passes over the elongated hole 17a when the belt 14 is run in the direction of the arrow by the drive-side pulley 12.
いま、ベルト１４を走行させるとともに負圧源
を作動させておいて送りローラ１８により紙葉１
００を下板１７上に送ると、紙葉１００の表裏に
圧力差が生じて該紙葉１００はベルト１４に吸
着、搬送される。下板１７上を通過した紙葉１０
０は送りローラ１９により排出される。 Now, while the belt 14 is running and the negative pressure source is activated, the sheet 1 is fed by the feed roller 18.
00 onto the lower plate 17, a pressure difference is generated between the front and back sides of the paper sheet 100, and the paper sheet 100 is attracted to the belt 14 and conveyed. Paper leaf 10 passed over the lower plate 17
0 is discharged by the feed roller 19.
上述の従来構造では、ボツクスの上板又は下板
にはほぼ全長にわたり大きな開口面積の長穴が形
成されているため、前の搬送路からベルトが紙葉
を受け取る際に、限られた能力（流量）の負圧源
では、初期搬送力が著しく低下する。これは、負
圧源の吸引力の大部分は外気が長穴を通過するの
に使用されて外気の圧力が低下し、ベルト上に進
入する紙葉の表裏に圧力差が小さくなるためであ
る。
In the conventional structure described above, a long hole with a large opening area is formed in the upper or lower plate of the box over almost the entire length, so when the belt receives paper sheets from the previous conveyance path, the belt has a limited capacity ( In the case of a negative pressure source (flow rate), the initial conveying force is significantly reduced. This is because most of the suction force of the negative pressure source is used to force the outside air to pass through the elongated hole, reducing the pressure of the outside air and reducing the pressure difference between the front and back sides of the sheet entering the belt. .
その結果、第９図の曲線搬送路方式では、特に
紙葉の剛性が比較的大きい場合に該紙葉がベルト
４の円弧形状に沿わず、第９図に点線で示すよう
にベルト４から離れてしまう。 As a result, in the curved conveyance path system shown in FIG. 9, especially when the rigidity of the sheet is relatively high, the sheet does not follow the arc shape of the belt 4 and separates from the belt 4 as shown by the dotted line in FIG. I end up.
また、第１０図の天上吸着方式では、特に紙葉
の剛性が比較的小さい場合に該紙葉が第１０図に
点線で示すように落下してしまう。 Further, in the ceiling adsorption method shown in FIG. 10, especially when the rigidity of the paper sheet is relatively low, the paper sheet falls as shown by the dotted line in FIG. 10.
本発明は比較的流量の小さな負圧源で初期搬送
力を増大させ且つ長い吸着搬送路を形成すること
のできる紙葉吸着搬送機構を提供することを目的
とするものである。 SUMMARY OF THE INVENTION An object of the present invention is to provide a sheet suction and conveyance mechanism that can increase the initial conveyance force using a negative pressure source with a relatively small flow rate and form a long suction and conveyance path.
第１図は本発明の原理説明図で、図中、３２は
穴空き無端状ベルト、３３は図示しない負荷源に
より吸引される空気の流通経路である。
FIG. 1 is a diagram illustrating the principle of the present invention. In the figure, 32 is an endless belt with holes, and 33 is a flow path for air sucked by a load source (not shown).
ベルト３２は、紙葉吸着用の多数の穴３２ａを
長手方向に沿つて多数備え、図示しない駆動系に
より駆動されて矢印方向に走行する。 The belt 32 has a large number of holes 32a along its longitudinal direction for adsorbing paper sheets, and is driven by a drive system (not shown) to travel in the direction of the arrow.
流通経路３３は、ベルト３２の幅より狭い幅の
長穴４７ａ（第３図参照）に近接して、吸入室４
９内に、空気流通経路形成板４８を設けることに
より形成され、長穴４７ａに沿う空気流を形成す
る。吸入室４９は負圧源により吸引され、これに
より、ベルト３２上の紙葉は吸引口３２ａを介し
て吸引される。５０はボツクス３４内の吸入室４
９に連通する吸引口である。 The circulation path 33 is located close to the elongated hole 47a (see FIG. 3), which has a width narrower than the width of the belt 32, and is connected to the suction chamber 4.
9 is formed by providing an air flow path forming plate 48 to form an air flow along the elongated hole 47a. The suction chamber 49 is suctioned by a negative pressure source, whereby the paper sheets on the belt 32 are suctioned through the suction port 32a. 50 is the suction chamber 4 in the box 34
This is a suction port that communicates with 9.
ベルト３２を矢印方向に走行させるとともに負
圧源を作動させておいて前の搬送路から紙葉１０
０をベルト３２上に供給すると、穴３２ａ、流通
経路３３、吸引口５０を通して行われる負圧源の
外気吸引作用によつて紙葉１００はベルト３２に
吸着して搬送される。
While the belt 32 is running in the direction of the arrow, the negative pressure source is activated, and the sheet 10 is removed from the previous conveyance path.
When 0 is supplied onto the belt 32, the paper sheet 100 is attracted to the belt 32 and conveyed by the outside air suction action of the negative pressure source performed through the hole 32a, the circulation path 33, and the suction port 50.
この場合、負圧源による吸引は、従来ボツクス
の上板（又は下板）の長穴を通り吸入室４９内に
行つていたのとは異なり、上述のように長穴４７
ａに近接して吸入室４９内に設けられた流通経路
３３を通して行われ、この流通経路３３内では空
気が絞られて流速が増大する。従つてこの部分で
の圧力と大気圧との圧力差が大きくなり、ベルト
３２、紙葉１００間の接触圧が増して搬送力が増
大する。このことを数式的に説明すると次の通り
である。 In this case, suction by the negative pressure source is different from the conventional case where the suction is carried out through the elongated hole in the upper plate (or lower plate) into the suction chamber 49.
This is carried out through a flow path 33 provided in the suction chamber 49 adjacent to the air flow path 33, and within this flow path 33, the air is throttled to increase the flow velocity. Therefore, the pressure difference between the pressure at this portion and the atmospheric pressure increases, the contact pressure between the belt 32 and the sheet 100 increases, and the conveying force increases. This can be explained mathematically as follows.
いま、大気圧をp1とし、流通経路３３内の空気
圧及び流速をp2及びｖとすると、これらの間には
次の関係が成立する。 Now, assuming that the atmospheric pressure is p 1 and the air pressure and flow velocity in the circulation path 33 are p 2 and v, the following relationship holds between them.
p2＋v2／2g＝p1
p1−p2＝v2／2g
すなわち、ｖが増大すると、圧力差は大幅に増
大して搬送力が増大する。 p 2 +v 2 /2g=p 1 p 1 −p 2 =v 2 /2g That is, as v increases, the pressure difference increases significantly and the conveying force increases.
以下、第２図乃至第８図に関連して本発明の実
施例を説明する。
Embodiments of the present invention will be described below with reference to FIGS. 2 to 8.
第８図は本発明を適用する記録装置の構造概要
説明図で、図中、１０１は感光ドラム、１０２は
前帯電器、１０３は露光器、１０４は現像器、１
０５は転写器、１０６はクリーナ、１０７は定着
器、１０８給紙部、１０９は排出ローラ、３１は
本発明に係る紙葉吸着搬送機構である。 FIG. 8 is a schematic structural diagram of a recording apparatus to which the present invention is applied, in which 101 is a photosensitive drum, 102 is a front charger, 103 is an exposure device, 104 is a developing device, 1
05 is a transfer device, 106 is a cleaner, 107 is a fixing device, 108 is a paper feed section, 109 is an ejection roller, and 31 is a paper sheet suction conveyance mechanism according to the present invention.
この記録装置による記録は次のように行われ
る。 Recording by this recording device is performed as follows.
矢印で示す時計方向に回転する感光ドラム１０
１の表面はまず前帯電器１０２により一様に帯電
され、次にこの上に露光器１０３によつて記録画
像に対応した潜像が形成される。この潜像は現像
器１０４により現像されてトナー像となり、該ト
ナー像は、給紙部１０８から供給される紙葉１０
０に転写器１０５によつて転写される。その後紙
葉１００は紙葉吸着搬送機構（構成、作用は後
述）３１により搬送され、該紙葉吸着搬送機構３
１に対向する定着器１０７によるトナー像定着が
行われる。その後、紙葉１００は排出ローラ１０
９によりスタツカ等へ排出される。 Photosensitive drum 10 rotating in the clockwise direction indicated by the arrow
1 is uniformly charged by a pre-charger 102, and then a latent image corresponding to a recorded image is formed thereon by an exposure device 103. This latent image is developed by the developing device 104 to become a toner image, and the toner image is applied to the paper sheet 10 fed from the paper feed section 108.
0 by the transfer device 105. Thereafter, the paper sheet 100 is transported by a paper sheet suction transport mechanism 31 (the structure and operation of which will be described later), and the paper sheet suction transport mechanism 3
The toner image is fixed by a fixing device 107 opposite to the fixing device 1 . After that, the paper sheet 100 is transferred to the ejection roller 10
9, it is discharged to a stacker or the like.
紙葉吸着搬送機構３１は、負圧源により裏側か
ら吸引される穴空きベルト上で紙葉を搬送する形
式のものであるが、次のその構成、作用を詳細に
説明する。 The sheet suction and conveyance mechanism 31 is of a type that conveys sheets on a perforated belt that is sucked from the back side by a negative pressure source, and its structure and operation will be described in detail below.
第２図は本発明に係る紙葉吸着搬送機構の構造
概要を示す側面図、第３図は同平面図で、紙葉吸
着搬送機構３１は、複数本の穴空きベルト３２
と、空気の流通経路３３が形成されたボツクス３
４とを備えている。なお、第３図ではベルト３２
は、多数の穴３２ａ（第３図では、一番上のベル
ト以外のベルトの穴３２ａは省略している）を全
長にわたり等間隔に備え、第２図の紙面と垂直方
向に伸びる軸３５に等間隔に固定された複数の駆
動プーリ３６と、軸３５と同方向に伸びる中空の
固定された軸３７に駆動プーリ３６と対応して取
り付けられた複数のプーリ３８とに掛け渡されて
テンシヨンプーリ３９により張力を付与されてい
る。プーリ３８の取り付け要領は第４図に示す通
りで、図中、４０は各プーリ３８の間に設けられ
て隣接する一方のプーリ３８のリング状部材４１
に固定されるスペーサであり、プーリ３８はベア
リング３８ａを介し軸３７に支持されている。軸
３７のスペーサ４０が嵌合する位置には円周方向
に等間隔に複数の穴３７ａが形成され、スペーサ
４０及びリング状部材４１には穴３７ａに対向可
能な穴４０ａ及び穴４１ａが形成されている。軸
３７の一端は、第３図及び第５図に示すようにダ
クト４２に接続され、軸３７の他端は、第３図及
び第６図に示すようにダクト４３に接続されてい
る。軸３７の中空部４４（第４図参照）は、これ
らのダクト４２，４３を介してボツクス３４内に
連通している。また、テンシヨンプーリ３９によ
るベルト３２への張力付与要領は第７図に示す通
りで、テンシヨンプーリ３９は、回動可能なアー
ム４５に支持され、該アーム４５を矢印方向に賦
勢するばね４６の賦勢力によりベルト３２の内側
に圧接して該ベルト３２に張力を付与する。 FIG. 2 is a side view showing an outline of the structure of the paper sheet suction and conveyance mechanism according to the present invention, and FIG. 3 is a plan view of the same.
and a box 3 in which an air circulation path 33 is formed.
4. In addition, in FIG. 3, the belt 32
is provided with a large number of holes 32a (holes 32a in belts other than the top belt are omitted in FIG. 3) at equal intervals over the entire length, and has a shaft 35 extending perpendicularly to the plane of the paper in FIG. Tension is stretched between a plurality of drive pulleys 36 fixed at equal intervals and a plurality of pulleys 38 attached to a hollow fixed shaft 37 extending in the same direction as the shaft 35 in correspondence with the drive pulleys 36. Tension is applied by a pulley 39. The procedure for attaching the pulleys 38 is as shown in FIG.
The pulley 38 is supported by the shaft 37 via a bearing 38a. A plurality of holes 37a are formed at equal intervals in the circumferential direction at the position where the spacer 40 of the shaft 37 is fitted, and a hole 40a and a hole 41a that can face the hole 37a are formed in the spacer 40 and the ring-shaped member 41. ing. One end of the shaft 37 is connected to a duct 42 as shown in FIGS. 3 and 5, and the other end of the shaft 37 is connected to a duct 43 as shown in FIGS. 3 and 6. A hollow portion 44 (see FIG. 4) of the shaft 37 communicates with the interior of the box 34 via these ducts 42, 43. Further, the manner in which the tension is applied to the belt 32 by the tension pulley 39 is as shown in FIG. 46 presses against the inside of the belt 32 to apply tension to the belt 32.
流通経路３３は、ベルト３２の裏側に紙葉搬送
方向に沿つて配設されているが、本例では、第３
図に示すように従来と同様の長穴４７ａを備えた
ボツクス３４の曲面状上板４７の裏面に、流通経
路形成板４８を一体的に設けて流通経路３３を形
成したものを示している。流通経路３３の少なく
とも感光ドラム１０１側の端部は、ボツクス３４
内の吸入室４９に吸引口５０を介し連通してい
る。 The distribution channel 33 is arranged on the back side of the belt 32 along the sheet conveyance direction, and in this example, the third
As shown in the figure, a flow path forming plate 48 is integrally provided on the back surface of a curved top plate 47 of a box 34 having elongated holes 47a as in the conventional case to form a flow path 33. At least the end of the distribution path 33 on the photosensitive drum 101 side is connected to a box 34.
It communicates with a suction chamber 49 inside through a suction port 50.
本発明に係る紙葉吸着搬送機構は以上のように
構成されるが、次にその作用について説明する。 The paper sheet suction and conveyance mechanism according to the present invention is constructed as described above, and its operation will be explained next.
記録開始時には、駆動プーリ３６を第２図の時
計方向に回転させるとともに、図示しないブロア
等の負圧源により吸入室４９内を吸引する。第３
図に示す接続部５１は、負圧源と吸入室４９を接
続するダクトを接続するためのものである。 At the start of recording, the drive pulley 36 is rotated clockwise in FIG. 2, and the inside of the suction chamber 49 is sucked by a negative pressure source such as a blower (not shown). Third
The connecting portion 51 shown in the figure is for connecting a duct connecting the negative pressure source and the suction chamber 49.
転写を完了した紙葉１００は感光ドラム１０１
の表面から分離してベルト３２上に進入するが、
上述のように軸３７の中空部４４はダクト４２，
４３を介し吸入室４９に連通していて負圧源の吸
引力を受けるため、軸３７の周囲の空気は第７図
に矢印線で示すように穴４１ａ，４０ａ，３７ａ
を介し中空部４４内に吸入され、紙葉分離は確実
に行われる。ベルト３２上に進入した紙葉１００
は、穴３２ａ、流通経路３３、吸引口５０を通し
て行われる負圧源の外気吸引作用によつてベルト
３２に吸着して搬送されるが、この場合の負圧源
による吸引は、従来ボツクスの上板（又は下板）
の長穴を通り吸入室内に行つていたのとは異な
り、ベルト３２の穴３２ａの列の真下に設けられ
た流通経路３３を通して行われ、この流通経路３
３内では空気が絞られて流通が増大する。従つ
て、この部分での圧力と大気圧との圧力差が大き
くなり、ベルト３２、紙葉１００間の接触圧が増
して搬送力が増大する。すなわち、比較的流量の
小さな負荷源で長い吸着搬送路を形成することが
でき、初期搬送力も増大する。 The paper sheet 100 that has been transferred is transferred to the photosensitive drum 101
separates from the surface of the belt 32 and enters the belt 32,
As mentioned above, the hollow part 44 of the shaft 37 is connected to the duct 42,
The shaft 37 is connected to the suction chamber 49 through the shaft 37 and receives the suction force of the negative pressure source, so that the air around the shaft 37 flows through the holes 41a, 40a, and 37a as shown by the arrow lines in FIG.
The paper is sucked into the hollow part 44 through the paper, and paper sheet separation is reliably performed. Paper leaf 100 that has entered onto the belt 32
is attracted to the belt 32 and conveyed by the external air suction action of the negative pressure source performed through the hole 32a, the circulation path 33, and the suction port 50. board (or lower board)
Unlike the case where the flow was carried out through a long hole into the suction chamber, the flow was carried out through a flow path 33 provided directly below the row of holes 32a of the belt 32, and this flow path 3
3, the air is constricted and the circulation is increased. Therefore, the pressure difference between the pressure at this portion and the atmospheric pressure increases, the contact pressure between the belt 32 and the sheet 100 increases, and the conveying force increases. That is, a long adsorption conveyance path can be formed with a load source having a relatively small flow rate, and the initial conveyance force is also increased.
なお、搬送路が長い場合には、流通経路内の管
路抵抗による圧力低下を避けるために吸入口５０
の外に吸引口５２1，５２2，５２3，…を間隔を
おいて配置する。本例のように感光ドラム１０１
側で曲線搬送を行う場合には、これらの吸引口５
２1，５２2，５２3，…の間隔を曲線搬送部で小
さくすれば該曲線搬送部での紙葉吸着力（搬送
力）が向上し、紙葉の剛性によるベルトからの離
脱防止上より効果的である。第３図にはこの吸引
口配置が明示されている。 Note that when the conveyance path is long, the suction port 50 is
Suction ports 52 1 , 52 2 , 52 3 , . . . are arranged at intervals outside of the. As in this example, the photosensitive drum 101
When performing curved conveyance on the side, these suction ports 5
If the intervals between 2 1 , 52 2 , 52 3 , ... are made smaller in the curved conveyance section, the sheet adsorption force (conveyance force) at the curved conveyance section will be improved, and it will be better to prevent the sheets from separating from the belt due to their rigidity. Effective. FIG. 3 clearly shows this suction port arrangement.
このようにベルト３２上を搬送される紙葉１０
０上のトナー像は定着器１０７により定着され、
定着を完了してベルト３２から離間して排出ロー
ラ等により排出される。この定着時に、本例のよ
うに曲線搬送を行う方式では、第２図に示すよう
なしやへい板５３を設けることによつて、定着器
１０７からの光が感光ドラム１０１を照射しない
ようにすることができる。 The paper sheet 10 conveyed on the belt 32 in this way
The toner image on 0 is fixed by a fixing device 107,
After completion of fixing, the toner is separated from the belt 32 and discharged by a discharge roller or the like. During this fixing, in the method of performing curved conveyance as in this example, a shield plate 53 as shown in FIG. 2 is provided to prevent light from the fixing device 107 from irradiating the photosensitive drum 101. be able to.
上述の説明ではベルトの上面により紙葉を搬送
する例について述べたが、本発明はベルトの下面
により紙葉を搬送する方式の場合にも適用可能で
ある。 In the above description, an example was described in which paper sheets are conveyed by the upper surface of the belt, but the present invention is also applicable to a system in which paper sheets are conveyed by the lower surface of the belt.
以上述べたように、本発明によれば、穴空きベ
ルトの裏側に設けられた流通経路による絞り作用
によつて、ベルト、紙葉間の接触圧を大きくして
搬送力を増加させるようになつているため、比較
的流量の小さな負圧源で長い吸着搬送路を形成す
ることができ、初期搬送力も向上する。
As described above, according to the present invention, the contact pressure between the belt and paper sheets is increased by the squeezing action of the circulation channel provided on the back side of the perforated belt, thereby increasing the conveying force. Therefore, a long suction conveyance path can be formed using a negative pressure source with a relatively small flow rate, and the initial conveyance force is also improved.
第１図は本発明の原理説明図、第２図は本発明
の実施例の紙葉吸着搬送機構の構造概要を示す側
面図、第３図は同平面図、第４図は本発明の実施
例の紙葉分離兼用プーリの支持要領説明図、第５
図は本発明の実施例の紙葉吸着搬送機構の外観を
示す左側面図、第６図は同右側面図、第７図は本
発明の実施例のベルトテンシヨン付与及び紙葉分
離要領説明図、第８図は本発明を適用する記録装
置の構造概要説明図、第９図ａ，ｂは従来の紙葉
吸着搬送機構の構造説明図、第１０図ａ，ｂは従
来の他の紙葉吸着搬送機構の構造説明図で、
図中、３１は紙葉吸着搬送機構、３２は穴空き
ベルト、３２ａは穴、３３は流通経路、３４はボ
ツクス、４７は上板、４８は流通経路形成板、４
９は吸入室、５０は吸引口、１００は紙葉であ
る。
Fig. 1 is a diagram illustrating the principle of the present invention, Fig. 2 is a side view showing an outline of the structure of a paper sheet suction conveyance mechanism according to an embodiment of the present invention, Fig. 3 is a plan view thereof, and Fig. 4 is an embodiment of the present invention. An explanatory diagram of the support procedure for the pulley that also serves as an example of sheet separation, No. 5
The figure is a left side view showing the external appearance of a paper sheet suction and conveyance mechanism according to an embodiment of the present invention, FIG. 8 are structural schematic diagrams of a recording apparatus to which the present invention is applied, FIGS. 9a and 9b are structural diagrams of a conventional paper sheet suction and conveyance mechanism, and FIGS. This is a structural explanatory diagram of the leaf suction and conveyance mechanism. In the figure, 31 is the paper leaf suction and conveyance mechanism, 32 is a perforated belt, 32a is a hole, 33 is a distribution route, 34 is a box, 47 is an upper plate, and 48 is a distribution route formation. board, 4
9 is a suction chamber, 50 is a suction port, and 100 is a paper sheet.
Claims (1)
て他方へ排出する紙葉吸着搬送機構であつて、 前記紙葉を吸着するための穴３２ａがその長手
方向に沿つて多数形成され、かつ平行に配置され
た複数の無端状のベルト３２と、 前記ベルト３２の幅よりも狭い幅で、かつ前記
ベルト３２の長手方向に沿つて延長する長穴４７
ａが前記複数のベルト３２にそれぞれ対向する位
置に形成された上板４７を備え、前記長穴４７ａ
と前記ベルト３２の穴３２ａとを介して前記ベル
ト３２上の紙葉を吸引するための吸入室４９と、 前記上板４７に接して、負圧源に接続された前
記吸入室４９内に配置され、かつ前記紙葉の搬送
方向と反対方向に、前記長穴４７ａに沿つて空気
が流れる流通経路を形成する為の吸引口５０を、
少なくとも前記紙葉が導入される側の前記長穴４
７ａの端部に対応する位置に形成した流通経路形
成板４８と を備えたことを特徴とする紙葉吸着搬送機構。[Scope of Claims] 1. A paper leaf suction and conveyance mechanism that sucks and conveys paper sheets introduced from one side and discharges them to the other side, wherein holes 32a for sucking the paper sheets are arranged along the longitudinal direction of the paper sheet. a plurality of endless belts 32 formed in large numbers and arranged in parallel; and a long hole 47 having a width narrower than the width of the belt 32 and extending along the longitudinal direction of the belt 32.
a is provided with an upper plate 47 formed at a position facing each of the plurality of belts 32, and the elongated hole 47a
and a suction chamber 49 for suctioning paper sheets on the belt 32 through the holes 32a of the belt 32; and a suction chamber 49 arranged in the suction chamber 49 in contact with the upper plate 47 and connected to a negative pressure source. and a suction port 50 for forming a circulation path through which air flows along the elongated hole 47a in the opposite direction to the conveying direction of the paper sheet,
At least the elongated hole 4 on the side into which the paper sheet is introduced
A paper sheet suction and conveyance mechanism characterized by comprising a distribution path forming plate 48 formed at a position corresponding to the end of the sheet 7a.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62266234A JPH01110449A (en) | 1987-10-23 | 1987-10-23 | Paper sheet suction conveying mechanism |
| DE3852691T DE3852691T2 (en) | 1987-10-23 | 1988-10-21 | Absorbent sheet transport mechanism for an imaging device. |
| EP88117603A EP0313088B1 (en) | 1987-10-23 | 1988-10-21 | A suction-type sheet-carrying mechanism for an image-forming apparatus |
| KR1019880013792A KR920001979B1 (en) | 1987-10-23 | 1988-10-22 | Absorption type paper carrier apparatus adapting image making machine |
| US07/607,629 US5031002A (en) | 1987-10-23 | 1990-10-31 | Suction-type sheet carrying mechanism applied to an image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62266234A JPH01110449A (en) | 1987-10-23 | 1987-10-23 | Paper sheet suction conveying mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01110449A JPH01110449A (en) | 1989-04-27 |
| JPH05296B2 true JPH05296B2 (en) | 1993-01-05 |
Family
ID=17428133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62266234A Granted JPH01110449A (en) | 1987-10-23 | 1987-10-23 | Paper sheet suction conveying mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01110449A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363066A (en) * | 2011-06-27 | 2012-02-29 | 大连海事大学 | Flame guide separation fire extinguishing apparatus |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10131607A1 (en) | 2000-07-28 | 2002-02-07 | Heidelberger Druckmasch Ag | Laying-out device for machine processing flat printable material has suction cavity in form of throttle channel |
| JP5303433B2 (en) * | 2009-10-28 | 2013-10-02 | 京セラドキュメントソリューションズ株式会社 | Sheet transport device |
| JP5681238B2 (en) * | 2013-06-24 | 2015-03-04 | 京セラドキュメントソリューションズ株式会社 | Sheet transport device |
-
1987
- 1987-10-23 JP JP62266234A patent/JPH01110449A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363066A (en) * | 2011-06-27 | 2012-02-29 | 大连海事大学 | Flame guide separation fire extinguishing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01110449A (en) | 1989-04-27 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |